$.ajax({
                    type: "POST",
                    url: "index.php?r=site/send",
                    dataType: "json",
                    data: {
                        event_id: cases[casePos-1]
                    },
                    success: function(response){
                        console.log('№' + casePos + ': ' + response['result']);
                        next();
                    },
                    error: function(XMLHttpRequest, textStatus, errorThrown) {
                        console.log('№' + casePos + ': ' + 'Ошибка при отправке. id=' + cases[casePos-1]);
                        next();
                    }
                });